Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 158
NWS STORM PREDICTION CENTER NORMAN OK
835 PM CDT THU APR 3 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHERN OKLAHOMA
NORTHERN TEXAS
EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 835 PM
UNTIL 400 AM CDT.
HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES SOUTHWEST
OF WICHITA FALLS TEXAS TO 40 MILES EAST NORTHEAST OF DURANT
OKLAHOMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
TORNADO WATCH NUMBER 153...TORNADO WATCH NUMBER 156. WATCH NUMBER
153 156 WILL NOT BE IN EFFECT AFTER 835 PM CDT. CONTINUE...WW
157...
DISCUSSION...STRONG SURFACE COLD FRONT WILL CONTINUE TO FOCUS STRONG
TO SEVERE THUNDERST0RM DEVELOPMENT AS IT PUSHES SWD ACROSS WW
OVERNIGHT... GIVEN VERY STEEP MID LEVEL LAPSE RATES ATOP ABUNDANT
LOW LEVEL MOISTURE. DEEP LAYER SHEAR WILL REMAIN SUPPORTIVE OF
SUPERCELLS AND SMALL LINEAR SEGMENTS...WITH PRIMARY SEVERE THREATS
OF LARGE HAIL AND DAMAGING WINDS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 27035.
...EVANS
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW8
WW 158 SEVERE TSTM OK TX 040135Z - 040900Z
AXIS..70 STATUTE MILES NORTH AND SOUTH OF LINE..
45SW SPS/WICHITA FALLS TX/ - 40ENE DUA/DURANT OK/
..AVIATION COORDS.. 60NM N/S /37SW SPS - 41S MLC/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27035.
REPLACES WW 153..OK TX
REPLACES WW 156..AR OK TX
LAT...LON 34529905 35189575 33159575 32509905
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU8.
Watch 158 Status Report Messages:
STATUS REPORT #6 ON WW 158
VALID 040735Z - 040840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 NE ABI TO
40 S MLC.
..GUYER..04/04/08
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 158
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC013-040840-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BRYAN
$$
TXC085-097-119-121-147-181-223-231-237-277-337-497-503-040840-
TX
. TEXAS COUNTIES INCLUDED ARE
COLLIN COOKE DELTA
DENTON FANNIN GRAYSON
HOPKINS HUNT JACK
LAMAR MONTAGUE WISE
YOUNG
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #5 ON WW 158
VALID 040640Z - 040740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 60 SSW SPS
TO 20 S MLC.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 548
..GUYER..04/04/08
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 158
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-013-085-095-040740-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BRYAN LOVE
MARSHALL
$$
TXC077-085-097-119-121-147-181-223-231-237-277-337-497-503-
040740-
TX
. TEXAS COUNTIES INCLUDED ARE
CLAY COLLIN COOKE
DELTA DENTON FANNIN
GRAYSON HOPKINS HUNT
JACK LAMAR MONTAGUE
WISE YOUNG
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 158
VALID 040525Z - 040640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 SW SPS TO
30 WSW ADM TO 15 N MLC.
..GUYER..04/04/08
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 158
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-013-019-029-067-069-085-095-099-040640-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BRYAN CARTER
COAL JEFFERSON JOHNSTON
LOVE MARSHALL MURRAY
$$
TXC009-077-085-097-119-121-147-181-223-231-237-277-337-497-503-
040640-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER CLAY COLLIN
COOKE DELTA DENTON
FANNIN GRAYSON HOPKINS
HUNT JACK LAMAR
MONTAGUE WISE YOUNG
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 158
VALID 040440Z - 040540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 SW SPS TO
40 WSW ADM TO 40 WNW MLC.
..GOSS..04/04/08
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 158
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-013-019-029-067-069-085-095-099-040540-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BRYAN CARTER
COAL JEFFERSON JOHNSTON
LOVE MARSHALL MURRAY
$$
TXC009-077-085-097-119-121-147-181-223-231-237-277-337-497-503-
040540-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER CLAY COLLIN
COOKE DELTA DENTON
FANNIN GRAYSON HOPKINS
HUNT JACK LAMAR
MONTAGUE WISE YOUNG
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 158
VALID 040340Z - 040440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 SW SPS TO
50 N ADM.
..GOSS..04/04/08
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 158
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-013-019-029-049-063-067-069-085-095-099-123-137-040440-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BRYAN CARTER
COAL GARVIN HUGHES
JEFFERSON JOHNSTON LOVE
MARSHALL MURRAY PONTOTOC
STEPHENS
$$
TXC009-023-077-085-097-119-121-147-181-223-231-237-277-337-485-
497-503-040440-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
COLLIN COOKE DELTA
DENTON FANNIN GRAYSON
HOPKINS HUNT JACK
LAMAR MONTAGUE WICHITA
WISE YOUNG
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 158
VALID 040235Z - 040340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GOSS..04/04/08
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 158
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-013-019-029-031-033-049-063-067-069-085-095-099-123-137-
141-040340-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BRYAN CARTER
COAL COMANCHE COTTON
GARVIN HUGHES JEFFERSON
JOHNSTON LOVE MARSHALL
MURRAY PONTOTOC STEPHENS
TILLMAN
$$
TXC009-023-077-085-097-119-121-147-181-223-231-237-275-277-337-
485-487-497-503-040340-
TX
. TEXAS COUNTIES INCLUDED ARE
ARCHER BAYLOR CLAY
COLLIN COOKE DELTA
DENTON FANNIN GRAYSON
HOPKINS HUNT JACK
KNOX LAMAR MONTAGUE
WICHITA WILBARGER WISE
YOUNG
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (10%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
High (70%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (40%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (90%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (F2-F5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.